Mixing ratios of greenhouse gases for sampled air on the north Pacific Ocen in MR-23-06C

Air samples were corrected into 28 stainless-steel flasks on MR23-06C cruise. The collected air samples were analyzed for the concentrations of CO2, O2 (O2/N2), Ar (Ar/N2), CH4, CO, N2O, SF6 and H2 and the isotopic ratios of CO2, CH4, N2, O2 and Ar.The CO2, CH4, CO, N2O, SF6, H2 concentrations were determined against Tohoku Univ. primary standard gases. The isotopic ratios of CO2 were reported in per mil relative to vPDB scale. The isotopic ratios of CH4 were reported in per mil relative to Tohoku Univ. scale. The O2/N2, Ar/N2 and isotopic ratios of N2, O2 and Ar are reported in per meg relative to AIST scale. Please contact the investigator to know the details of the standard scales.在MR23-06C航次期间，空气样品经校正后被分装至28个不锈钢采样瓶中。对采集得到的空气样品开展了如下分析：测定CO₂、O₂（以O₂/N₂比值计）、Ar（以Ar/N₂比值计）、CH₄、CO、N₂O、SF₆及H₂的浓度，同时分析CO₂、CH₄、N₂、O₂和Ar的同位素比值。CO₂、CH₄、CO、N₂O、SF₆及H₂的浓度以东北大学（Tohoku University）一级标准气体作为校准基准进行定量。CO₂的同位素比值以相对于维也纳佩尔迪贝（vPDB）标准的千分偏差形式报告。CH₄的同位素比值以相对于东北大学（Tohoku University）标准的千分偏差形式报告。O₂/N₂、Ar/N₂比值以及N₂、O₂、Ar的同位素比值以相对于日本产业技术综合研究所（AIST）标准的百万分偏差（per meg）形式报告。如需了解上述标准刻度的详细信息，请联系本研究负责人。